Besides job announcements on SoCalGIS.org, here are some California based sites:

MISAC
CGIA
BayGeo
NorthStateJobs
ESRI

And national job sites:

GIS Jobs Clearninghouse
URISA Marketplace
GovernmentJobs.com
GeographyJobs.com
GeoSearch
MyGISJobs
GISGeography.com

If you have a job opening you would like to post on our site, please use the About page to leave the details about the position.  We will get it posted right away for free!